1958 AC Ace vs. 1999 BMW X5
To start off, 1999 BMW X5 is newer by 41 year(s). Which means there will be less support and parts availability for 1958 AC Ace. In addition, the cost of maintenance, including insurance, on 1958 AC Ace would be higher. At 4,398 cc (8 cylinders), 1999 BMW X5 is equipped with a bigger engine. In terms of performance, 1999 BMW X5 (282 HP @ 5400 RPM) has 157 more horse power than 1958 AC Ace. (125 HP @ 6000 RPM) In normal driving conditions, 1999 BMW X5 should accelerate faster than 1958 AC Ace. With that said, vehicle weight also plays an important factor in acceleration. 1999 BMW X5 weights approximately 1288 kg more than 1958 AC Ace. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1999 BMW X5 is four wheel drive (4WD), it will have significant more traction and grip than 1958 AC Ace. In wet, icy, snow, or gravel driving conditions, 1999 BMW X5 will offer significantly more control. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 1999 BMW X5 (439 Nm @ 3600 RPM) has 272 more torque (in Nm) than 1958 AC Ace. (167 Nm @ 4500 RPM). This means 1999 BMW X5 will have an easier job in driving up hills or pulling heavy equipment than 1958 AC Ace. 1999 BMW X5 has automatic transmission and 1958 AC Ace has manual transmission. 1958 AC Ace will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 1999 BMW X5 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1958 AC Ace | 1999 BMW X5 | |
| Make | AC | BMW |
| Model | Ace | X5 |
| Year Released | 1958 | 1999 |
| Body Type | Roadster | SUV |
| Engine Position | Front | Front |
| Engine Size | 1969 cc | 4398 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 125 HP | 282 HP |
| Engine RPM | 6000 RPM | 5400 RPM |
| Torque | 167 Nm | 439 Nm |
| Torque RPM | 4500 RPM | 3600 RPM |
| Engine Bore Size | 66 mm | 92 mm |
| Engine Stroke Size | 96 mm | 82.7 mm |
| Engine Compression Ratio | 9.0:1 | 10.0:1 |
| Top Speed | 195 km/hour | 207 km/hour |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 896 kg | 2184 kg |
| Vehicle Length | 4010 mm | 4670 mm |
| Vehicle Width | 1540 mm | 1880 mm |
| Vehicle Height | 1270 mm | 1710 mm |
| Wheelbase Size | 2290 mm | 2730 mm |
| Fuel Tank Capacity | 59 L | 93 L |
